Definition
Kin recognition, also called kin detection, is an organism's ability to distinguish between close genetic kin and non-kin. In evolutionary biology and evolutionary psychology, such an ability is presumed to have evolved for inbreeding avoidance. While a 2021 meta-analysis of research across 88 diploid species found that animals rarely avoid inbreeding, avoidance is more common in species with developmental co-residence since the latter is a proxy for kin recognition.
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